{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43211","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.993Z","datePublished":"2026-05-06T11:28:14.423Z","dateUpdated":"2026-05-11T22:20:09.080Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:20:09.080Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Fix pci_slot_trylock() error handling\n\nCommit a4e772898f8b (\"PCI: Add missing bridge lock to pci_bus_lock()\")\ndelegates the bridge device's pci_dev_trylock() to pci_bus_trylock() in\npci_slot_trylock(), but it forgets to remove the corresponding\npci_dev_unlock() when pci_bus_trylock() fails.\n\nBefore a4e772898f8b, the code did:\n\n  if (!pci_dev_trylock(dev)) /* <- lock bridge device */\n    goto unlock;\n  if (dev->subordinate) {\n    if (!pci_bus_trylock(dev->subordinate)) {\n      pci_dev_unlock(dev);   /* <- unlock bridge device */\n      goto unlock;\n    }\n  }\n\nAfter a4e772898f8b the bridge-device lock is no longer taken, but the\npci_dev_unlock(dev) on the failure path was left in place, leading to the\nbug.\n\nThis yields one of two errors:\n\n  1. A warning that the lock is being unlocked when no one holds it.\n  2. An incorrect unlock of a lock that belongs to another thread.\n\nFix it by removing the now-redundant pci_dev_unlock(dev) on the failure\npath.\n\n[Same patch later posted by Keith at\nhttps://patch.msgid.link/20260116184150.3013258-1-kbusch@meta.com]"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/pci.c"],"versions":[{"version":"e2355d513b89a2cb511b4ded0deb426cdb01acd0","lessThan":"ebb27b7399ab8b9eb1f792b329aa5f6250c590d4","status":"affected","versionType":"git"},{"version":"04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945","lessThan":"fbe06a3058114bf95a17a4941b205f4b321c6f0a","status":"affected","versionType":"git"},{"version":"7253b4fed46471cc247c6cacefac890a8472c083","lessThan":"943ed56606a7ab2fe5a99cad572dd17d484310c7","status":"affected","versionType":"git"},{"version":"78c6e39fef5c428960aff742149bba302dd46f5a","lessThan":"a19b61fdb958ffadbba85b43c991eb9fc70c1c1c","status":"affected","versionType":"git"},{"version":"a4e772898f8bf2e7e1cf661a12c60a5612c4afab","lessThan":"0425aaf20b407d2f2cf3bf469808e4a35f9abb8b","status":"affected","versionType":"git"},{"version":"a4e772898f8bf2e7e1cf661a12c60a5612c4afab","lessThan":"bd435f4b738130d732ef64e0e57e45185f77165d","status":"affected","versionType":"git"},{"version":"a4e772898f8bf2e7e1cf661a12c60a5612c4afab","lessThan":"8b08ea9690b212b7bf7f12414039259cf34b1aa0","status":"affected","versionType":"git"},{"version":"a4e772898f8bf2e7e1cf661a12c60a5612c4afab","lessThan":"9368d1ee62829b08aa31836b3ca003803caf0b72","status":"affected","versionType":"git"},{"version":"0790b89c7e911003b8c50ae50e3ac7645de1fae9","status":"affected","versionType":"git"},{"version":"df77a678c33871a6e4ac5b54a71662f1d702335b","status":"affected","versionType":"git"},{"version":"81c68e218ab883dfa368460a59b674084c0240da","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/pci.c"],"versions":[{"version":"6.11","status":"affected"},{"version":"0","lessThan":"6.11","status":"unaffected","versionType":"semver"},{"version":"5.10.252","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.202","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.165","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.128","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.75","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.226","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.167","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.110","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.51","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.322"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ebb27b7399ab8b9eb1f792b329aa5f6250c590d4"},{"url":"https://git.kernel.org/stable/c/fbe06a3058114bf95a17a4941b205f4b321c6f0a"},{"url":"https://git.kernel.org/stable/c/943ed56606a7ab2fe5a99cad572dd17d484310c7"},{"url":"https://git.kernel.org/stable/c/a19b61fdb958ffadbba85b43c991eb9fc70c1c1c"},{"url":"https://git.kernel.org/stable/c/0425aaf20b407d2f2cf3bf469808e4a35f9abb8b"},{"url":"https://git.kernel.org/stable/c/bd435f4b738130d732ef64e0e57e45185f77165d"},{"url":"https://git.kernel.org/stable/c/8b08ea9690b212b7bf7f12414039259cf34b1aa0"},{"url":"https://git.kernel.org/stable/c/9368d1ee62829b08aa31836b3ca003803caf0b72"}],"title":"PCI: Fix pci_slot_trylock() error handling","x_generator":{"engine":"bippy-1.2.0"}}}}